JPS62150348U

JPS62150348U -

Info

Publication number: JPS62150348U
Application number: JP3622487U
Authority: JP
Priority date: 1987-03-12
Filing date: 1987-03-12
Publication date: 1987-09-24

Description

[Brief explanation of drawings]

第１図乃至第８図は本考案に係る粉体粒体用紙
袋の一実施例を示したもので、第１図は紙袋の斜
視図、第２図乃至第５図は紙袋の製造法を工程順
に示したもので、第２図は展開図、第３図は袋本
体を形成した平面図、第４図、第５図はその後の
工程の要部拡大斜視図、第６図、第７図は本考案
の粉体粒体用紙袋に粉体又は粒体を詰め込む状態
を示したもので、第６図は注入ノズルを弁の吹込
通路に挿入した状態の要部斜視図、第７図は紙袋
に粉体又は粒体を詰め込んだ状態の要部斜視図、
第８図は紙袋に粉体又は粒体を詰め込んだ紙袋全
体の斜視図、第９図及び第１０図は従来の袋を示
したもので、第９図はその平面図、第１０図は第
９図の縫合する前の要部拡大斜視図である。１１……裏紙部、１１ａ，１１ｂ……上部隅部
、１２ａ，１２ｂ……折り込み側紙部、１５……
縦糊代部、１６……Ｖ字折り畳み紙片、１６ａ…
…開口先端部、１８……縦形不帰還弁、２０……
補強紙片、Ｂ……袋本体。 Figures 1 to 8 show an embodiment of a powder paper bag according to the present invention. Figure 1 is a perspective view of the paper bag, and Figures 2 to 5 show a method of manufacturing the paper bag. The steps are shown in the order of steps: Figure 2 is a developed view, Figure 3 is a plan view of the bag body formed, Figures 4 and 5 are enlarged perspective views of the main parts of subsequent processes, and Figures 6 and 7. The figures show the state in which powder or granules are packed into the paper bag for powder or granules of the present invention. Figure 6 is a perspective view of the main part with the injection nozzle inserted into the blowing passage of the valve, and Figure 7 is a perspective view of the main part of a paper bag filled with powder or granules,
Fig. 8 is a perspective view of the entire paper bag filled with powder or granules, Figs. 9 and 10 show conventional bags, Fig. 9 is its plan view, and Fig. 10 is the FIG. 9 is an enlarged perspective view of the main part of FIG. 9 before suturing. 11...back paper part, 11a, 11b...upper corner part, 12a, 12b...folding side paper part, 15...
Vertical glue margin, 16... V-shaped folded paper strip, 16a...
...Opening tip, 18... Vertical non-return valve, 20...
Reinforcement paper piece, B...Bag body.

Claims

[Scope of utility model registration request]

A horizontally movable vertical non-return valve is provided at the upper corner of the back side of the bag body, which is made by pasting a V-shaped folded paper piece between the vertical glue margin and the backing paper section at a position isolated from the folding side paper section. In the paper bag for powder and granules, the vertical non-return valve is formed of a V-shaped folded paper piece whose opening end is folded back and becomes double, and the opening end is formed by folding the side paper of the bag body. 1. A paper bag for powder and granule material, characterized in that a piece of reinforcing paper is pasted to the back side of a bag main body in which a vertical non-return valve including the protruding part is located.